Clam-shell bucket.



No. 676,|89. Patented lune ll, I90l.

' J. G. HOSHOB.

SLAM SHELL BUCKET.

(Application filed Oct. 1, 1900.)

(No Model.)

UNITED STATES PATENT OFFIC JOSEPH O. I -IOSI-IOR, OF PATERSON, NEW JERSEY, ASSIGNOR TO HIMSELF AND THOMAS E. PLATT, OF SAME PLACE.

CLAM-SHELL BUCKET.

SPECIFICATION forming part of Letters Patent No. 676,189, dated June 11, 1901. Application filed October 1, 1900. Serial No. 31,606- (No model.)

tilt

To all whom it may concern:

Be it known that I, JOSEPH O. HOSHOR, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented an Improvement in Clam-Shell Buckets, of which the following is a specification.

- My invention relates to improvements in clam-shell or hoistingbuckets, with the object of simplifying the construction and making more effective the operation of the parts. I provide the head-block with a shaft acting as a common support for the pairs of links extending to the halves of the clam-shell bucket and for other links supporting a shaft and sheaves around which the closing-chain passes, so that the latter links are adapted to swing on the same device or pivot as the buckets and the aforesaid links regardless of the position assumed by the bucket in picking up the material forming the load. The two parts of the bucket are pivoted together to a shaft which carries other sheaves around which the closing-chain passes, and the respective sets of sheaves are close together, and they are not pulled out of line in operation because of the swinging of the set of sheaves nearest the head-block uponthe links and shaft provided therefor.

In the drawings, Figure 1 is a side elevation, Fig. 2 an end elevation, and Fig. 3 a plan, representing my invention; and Fig. 4 is a side elevation showing the parts of the clam-shell bucket as fully open.

The head-block a, is provided with lugs a,

. extending downward from the underside, and

with a loop 11 extending out at one side, and the lugs and loop are preferably made integral with the head-block. A shaft b passes through the lugs a and forms a common support for the pairs of links 2 3, pivoted thereto and extending from the said shaft to opposite corners of the halves c c of the clam-shell bucket, which halves are preferably stiffened along the inclined upper edges. by ribs 1, which provide sufficient metal for the pivots by which the lower ends of the pairs of links 2 3 are connected to the halves of the bucket.

I provide links at d, suspended or hanging from the shaft 7) and at their lower ends receiving a short shaft 5, forming a support for the sheaves 4, located on said shaft between the said links. The halves o c of the bucket are pivotally connected to a shaft, e, which extends across and passes through lugs oifset from one another and formed as central continuations of the ribs 1. This shafte carries sheaves 6 and collars around the shaft 6 on opposite s-idesof the sheaves to hold the same in position, one of said collars 7 forming a point of attachment for the closing-chain f, which extends therefrom progressively and alternately around the sheaves 4 and 6 and upward through the loop a and over the edge of a grooved roller S, preferably pivoted to the loop and to the head-block.

The hoisting-chain g is connected to the head-block in any desired manner. I have for the purpose of illustration shown the same connected to a simple eye formed integral with or secured to the central portion of the head-block. In the closed position of the bucket (shown in Figs. 1, 2, and 3) it will be noticed that the sheaves at and 6 are close to-' gether, so that no great length of chain is employed and the power devices are close to one another. It will also be noticed that the parts of the bucket, whether the same are closed or open, are free to swing on the shaft b. This is especially advantageous when the bucket is open and rests upon the mass of material part of which is to form the load of the bucket, as in this case the open mouth of the bucket may assume any inclination corresponding with the inclination of the surface of the material. Whatever this inclination may be, it is advantageous that the closing chain, as between the sheaves, should draw in a straight line Without putting any undue strain on the parts of the mechanism and that the devices in my improvement permit of the chain drawing straight, because with this inclination the links d will swing on the shaft 1) to conform thereto, so that the parts of the closing-chain, as extending between the sheaves 4 and 6, which are close together, will draw straight and always at right angles to the open mouth of the bucket. With this construction and because the sheaves 4 are not on the shaft I but on the separate shaft 5, less power is Ido the'head-block and adapted to swing with the movement of the'bucket below the head-block, the sheaves upon the shaft pivotally connecting the halves of the bucket and the closinging around the sheaves whereby chitin will man tirhes' dra-W'straightan'gl'e's' to the open nio'u'th ofthe taintially as set forth.

' nation with the halvesof the ivota'l'ly connecting the samelv'esc'g'f thebu'ket, of a head-Block A spn the under side, a shaft passing th the lhg's and to w'hicli'tlie' upper ends s of links are pivotally' connected, H6 said Shaft between the Said h nging therefrorn, ashaft carried by' the ,uer free ends of the links, sheaves semis-heft between the links, sheaves :upon the 'pivo-tal shaftof the halves of the bucket, a chain passing around the sheaves for closing the bucket and a chain for hoisting the bucket, substantially as set forth.

3. The combination with the halves of the bucket, ashaft pivotall-y connecting the same,

1 and pairsof links extending from the corners of the halves of the bucket, of ahead-block With lugs on the under side, a shaft passing through the lugs and to which the upper ends of the'pairs of links are pivotally connected, links upon the said shaft between the said (lugs; and hanging therefrom, a; shaft carried by the lowerfreeendsof the links, sheaves upontsaid shaft between the links, sheaves upon the pivotal shaft of thehalves of the. bucket, collars upon the pivotal. shaftrof the halves of the bucket at either sag-1e of the s'heav'es, aclosi'rig-ch 11 connected toque of said collars and passing p'rogrssi've'ly-andalternately around the respective sheaves, and a guide for the said closing chaing in" the said I {head-block, substantially as setfqrfih'. 3 Signed by me this 24th (my of September, 1900;

, JOSEPH' Ito-seen Witnesses; Q

-GEo.-lf.-P1NcKNE Y,

s; T. nAvrLAnn. 

